High Performance Check Valve - Pinholpinhol.pt/fotos/editor2/08_dualplateaxialflowcheckvalve.pdf ·...
Transcript of High Performance Check Valve - Pinholpinhol.pt/fotos/editor2/08_dualplateaxialflowcheckvalve.pdf ·...
Cat.no.:E-GGC
Cat.no.:E-FSVCat.no.:E-BFV Cat.no.:E-PV
No.999 Xiangjiang Road, Suzhou New District,P.R. China Post Code:215129Tel: 86-512-666-51365Fax: 86-512-666-51360E-Mail: [email protected] http://www.newayvalve.com
Distributed by:
Cat.no.:E-AV
Ca
t.n
o.:
E-D
AV
-20
07
NEWAY VALVE Cat.no.:E-DAV-2007
Complete Solutions for Engineered Valves
Cat.no.:E-6AGV
API 6D Axial Flow Check Valve
API 594 Dual Plate Check Valve
1
TA Luft
Fire Safe Test
Quality
CommitmentTable of
Contents
Introduction
4-5
9
2
3
1 Quality Commitment
Dimensions & Weights
How to Order
Product Range
Design Feature
20-23
25-28
Design Feature
Dimensions & Weights
Dual Plate Wafer Check Valve
Axial Flow Check Valve
10-19
Parts & Materials
24 Parts & Materials
e w a y r e c o g n i z e s t h e
importance of valve quality for Nthe safety and protection of
personnel health and property. It is our
q u a l i t y c o m m i t m e n t t o f o c u s o u r
resources to provide our customers with
first class products at a competitive price,
designed, manufactured, inspected and
tested in accordance with our customers
specifications and in compliance with all
international standards.
We understand that the current industrial
s tandards do not a lways take in to
consideration all of the potential service
conditions as they relate to specific flow
condition or the external environment in
which they operate. Our customers are
requested to keep an open l ine of
communicat ion with our engineering
department to identify and implement
standards, that will provide valves with
the possibility of deterioration in service,
so as to ensure safety over the valves
expected lifetime.
Complete Solutions for Engineered Valves
Neway Facilities
Quality Assurance
Being one of the leading valve manufacturer in the world, Neway
exclusively specializes in the development of innovative designs, through
intensive R&D programs and engineering excellence. We engineer and
manufacture valve solutions for all industries.
Neway's main product lines include Gate, Globe, Check, Butterfly and Ball
valves. Our production facilities and quality system have been inspected
and approved by many global end users and EPC firms. Our products have
been installed around the world, handling a wide variety of applications in
the Gas, Oil, Refining, Chemical, Marine, Power Generation and Pipeline
Transmission Industries.
Neway's management groups are structured based on operating several
plants. Neway valves are manufactured in 6 specialized manufacturing
facilities, four in China, one in Mexico and the other in Saudi Arabia. They
are all supplied by two Neway owned specialized foundries. Neway has
over 1700 employees.
Our intranet includes over 400 computers using the most advanced R&D
software including CAD, I-Deas, Pro-E, a number of CNC & machine
centers and warehouse bar code management systems. We are one of the
few valve manufacturers performing Enterprise Resource Planning (ERP),
in-house fire safe and cryogenic tests, high pressure gas and low fugitive
emission testing.
Neway's quality assurance is dedicated to the pursuit of zero defect valve
supply to our customers. We have implemented a 6 sigma management
process in order to continually improve our process and management
control through the use of advanced statistical data analysis. Neway holds
most of industrial valve manufacturing certificates, such as ISO 9001,
CE/PED, TA-Luft, API 6A, API 6D, ABS, and API 607 Fire Safe certificate.
Performance Comparison
6-8
Valve Size
End Wafer LUG Double-flange/Raised Face Flanged End
Symbol W L R
End Connection
Shell Material
Material WCB LCB LCC WC6 WC9 C5 CF8 CF8M CF3 CF3M CD3MN
ASTM Ref A216 Gr.
WCB
A352 Gr.
LCB
A352 Gr.
LCC
A217 Gr.
WC6
A217 Gr.
WC9
A351 Gr.
CF8M
A351 Gr.
CF3M
A890 Gr.
CD3MN
RTJ Flange End
J
Butt-Welding End
B
A351 Gr. CF3
A351 Gr. CF8
A217 Gr. C5
8 3 W
Following descriptions provide a basic guideline in valve specification:
SBN WCB
Neway valve figure number are designed to cover essential feature. When ordering, please show the figure number and a detailed
description to avoid misunderstanding of your requirement.
Figure Number Example:
Dual-plate Check Valve Axial Flow Type Check Valve
SBN SA
Valve Type
Symbol
Valve Type
,
2 3
NO.8
/
ANSI Class
Class (LB)
Code 1 3 6 9 15 25
150 300 600 900 1500 2500
Trim Material
API600 Trim Number Symbol Disc Surface Seat Surface Hinge Material
1
1
13%Cr
13%Cr
ASTM A276-410
2 2 18%Cr,8%Ni 18%Cr,8%Ni ASTM A276-304
5 5 Stellite Stellite ASTM A276-410
8 8 13%Cr Stellite ASTM A276-410
9
9
Monel
Monel
Ni Cu Alloy Monel
10
10
18%Cr,8%Ni
18%Cr,8%Ni
ASTM A276-316
12 12 18%Cr,8%Ni Stellite ASTM A276-316
13
13
Alloy 20 19%Cr,29%Ni
Alloy 20 19%Cr,29%Ni
ASTM B473
16 16
Stellite
Stellite
ASTM A276-316
20 Bronze Bronze Bronze
Note 1.Trim number 1 to 13 are same as API 600 .
2.Trim number 1 may be replaced by trim number 8 without notice.
Product Range
4
400
Wafer Lug Flanged
2"
2-1/2"
3"
4"
5"
6"
8"
10"
12"
14"
16"
18"
20"
24"
30"
36"
42"
48"
54"
60"
150lb
Wafer Lug Flanged
300lb
Wafer Lug Flanged
600lb
Wafer Lug Flanged
900lb
Wafer Lug Flanged
1500lb
Wafer Lug Flanged
2500bClass
Type
150lb 300lb 400lb 600lb 900lb 1500lb 2500lb
2"
3"
4"
6"
8"
10"
12"
14"
16"
18"
20"
22"
24"
28"
30"
34"
36"
40"
42"
48"
Axial Flow Check Valve
Class
Dual Plate Check Valve
4 5
10 ”
The short face to face design inherently makes dual-plate check
valve and axial check valves (short pattern) lighter and more
1. Face to Face F to F Dimension and Valve Weight
Below data from10" 150LB check valve
Structure Swing Dual-plate Axial Flow Axial Flow(short)
F to F (mm) 622 146 622 365
Weight(kg) 195 45 184 151
Performance Comparison Performance Comparison
compact than traditional swing check valves, this will lead to ease
of installation and lower operation costs.
In zero flow conditions, the swing check valve disc/seat seal relies on gravity
to remain in the closed position, therefore the sealing performance can be
unreliable. The dual plate check and axial flow check designs incorporate
springs to assist closure and keep the disc seat face closed against the body
seat for a more reliable isolation in zero flow or low pressure applications.
4. Closure Performance Under Low Pressure
The swing check design is not ideal for vertical installation due to its internal
structure while the dual-plate and axial flow check valve can be installed in
any position because of disc spring assists the tight closure at any position.
Moreover dual-plate check valves, have a relatively short face-to-face
structure and lower weighted, it is ideal for installation at the location where
weight and space are limited.
3. Installation Position
Swing check valves have a larger internal cavity as compared to the dual
plate design, heavier weight and a longer closing travel distance, and the
disc will impact heavily on the seat, this action will easily cause water
hammer problems and reduce the disc/seat service life. For this reason
swing check valves are not generally recommended for piping system above
36".
2. Available Size Range
5. Pressure Range
l Dual-plate check valves have a short face-to-face dimension
and the weight is only about 25% that of a comparable size swing
check valve. Due to the smaller valve configuration, lower weight
and low maintenance cost of the dual plate valve design, the
total life cycle cost is the lowered. Depending on the body
material, dual plate checks offer a cost savings over the larger
size swing check design.
l
l
l
Due to swing check valves internal design, water hammer
and pressure surge problems can easily occur if the valve is
not properly sized for the application. Many piping system
failure can be attributed to the improper installation of check
valves.
NEWAY'S axial flow check valve has a venturi port design
that reduces flow resistance and improves flow efficiency.
The spring aided disc, also gives a tight disc/seat closure
seal at all working pressures.
NEWAY'S dual-plate check valve disc has a slim plate design
which offers less restriction to flow at full open position.
Compared with many of other manufacturers NEWAY'S dual-
plate check valve pressure drop is substantially lower.
Swing Dual-plate Axial Flow
Manufacturing cost Medium Low High
Maintenance cost High Low Low
Service life Low Medium Long
Life cycle cost High Low Medium
l
l
Due to the swing check valve's internal design, the disc can tap
against the body seat or against the full open stop causing noise
and potential flow turbulence.
Dual-plate and axial flow check valve design have spring
assisted discs which can significantly reduce the water hammer
7. Noise
Problem and operational noise. As flow through the valve
slows down, the springs cause the disc plates or disc to start
the closing motion. When flow stops, the disc plates are
already in the closed position. This design can also minimize
any back flow through the check valve which does occur with
the normal swing check design.
8. Cost
l Axial flow check valves, because of their complicated internal
structure and relatively involved longer manufacturing process,
in general, their manufacturing cost is the highest among 3
type of check valves. However due to the outstanding flow
ef f ic iency and performance, and maintenance f ree
characteristics, the total life cycle cost of the axial flow check
valve is competitive compare with swing check valves.
9. Flow Efficiency
6. END Connection
Figure : Dynamic flow performance characteristics.
L L LL
Swing Dual-Plate Axial Flow
150lb
300lb
600lb
900lb
1500lb
2500lb
Swing Axial Flow
Flange
BW
Wafer
LUG
Dual-plate
The dual-plate check valve and Axial flow check valve internal design
minimizes the water hammer problem, it can also significantly improve the
flow efficiency which is important for large size piping system. For larger
O.D. piping systems, 36" and above, the dual-plate and axial flow check
valve designs are recommended and preferred. These valve designs
should also be considered for smaller O.D. piping systems where swing
check valves have demonstrated flow related problems.
6 7
toward outside (no bolted or threaded connections), cost
savings, they can be installed in any line orientation,
superior seal performance, offer minimal line shock, lower
pressure loss and zero seat wear.
This series of valves are widely used in oil & gas production,
petroleum ref ining, petrochemical , pulp & paper,
shipbuilding, and other fluid back flow prevention
application.
Retainerless Body Design. (Patent Protected)
Shock Bumpers.
Uninterrupted Gasket Surface.
Two Independent Torsion Springs.
Body Slot Design to Fit the Hinge Pin.
Neway series SBN check valve has a shorter face-to-face
dimension and dual plate design, the end connection
options include wafer type, lug type and double-flange type,
and are available in size from 2" to 60" and in pressure
ratings from ASME class 150 through 2500. A wide range of
body and trim materials are optional on customer's request.
Compared to conventional swing check valves, NEWAY'S
dual plate check valves have the advantage of zero leakage
Dual Plate Check ValveDesign Feature
8 9
5. Uninterrupted Gasket Surface
6. Light weight and compact wafer design
7. Flexibility in installation position
8. Dual plate & Flat seat design
9. Size Range
The Neway dual plate design incorporates an internal retention
fitting. The fitting does not encroach the gasket sealing surface, to
ensure the effective seal between valve and pipeline.
Dual plate wafer designs inherently makes this check valve lighter,
which is only 10~25% of the weight of conventional swing check
valve, to saves money in initial valve cost and provides lower
installation cost.
The spring feature aids in keeping the valve closed and the lighter
weight in eliminating pipeline bending loads make the valve flexible
installed in any position, to allow you to design your piping layout in
the most efficient and least expensive method.
When the valve opens, the heel of the dual plate is lifted in the
direction of the flow, to avoid that the heel drag across the seating
surface and cause wear. When closing the valve, both the two high
torsion springs and the back pressure will force disc toe and heel
back in turn to the flat seat to complete the seal.
Do to features of the wafer check light weight, small installation
space, spring aids and easy sealing, the valve may be used in the
field of lager piping sizes, even in 60" or above piping system.
Dual Plate Check Valve
Conventional Design Retainerless Body Design
Design Feature
independent spring
1 Retainerless Body Design (Patent Protected)
NEWAY'S dual plate valve bodies are a one-piece and short
cylinder design with no holes through body wall, there is no need for
external pins or plugs and no leakage toward outside. For critical
service applications, such as hazardous or poisonous medium, this
is a superior choice to minimize unwanted leakage to atmosphere.
2 Body Slot Design to Fit the Hinge Pin
A body slot with carefully calculated clearance is designed to fit the
hinge pin and allows hinge pin to move in the only direction of flow.
The design eliminates the possibility of friction caused by the heel
of the dual plate.
4 Two Independent Torsion Springs
Two high torsion springs ensure valve closure as quick as possible,
and reduces water hammer, so as to extend valve life and improve
system performance.
3. Shock bumpers
The integral cast bumper on the back of the dual plate is an
effective design to prevent the frequent hitting, and reduces the
pressing from the dual plate against the stop pin when the valve is
fully opened, This extends the service life of the valve and
minimizes maintenance cost.
1
2
4 Retainer Design
Slot
Hinge pin Clip Stop pin
Body Holder Key
Parts & Materials
Materials
Parts Materials
Body ASTM A216-WCB/STL
OVERLAY
ASTM A352-LCC/STL
OVERLAY
ASTM A217-WC6/STL
OVERLAY
ASTM A351 CF8M/STL
OVERLAY
Disc
ASTM A217-CA15 or
ASTM A216-WCB/CR13
OVERLAY
ASTM A351-CF8M or
ASTM A352-LCC/316
OVERLAY
ASTM A217-WC6/STL
OVERLAY ASTM A351 CF8M
Hinge pin ASTM A276-410 ASTM A276-316 ASTM A276-410 ASTM A276-316
Stop pin ASTM A276-410 ASTM A276-316 ASTM A276-410 ASTM A276-316
Holder ASTM A276-420 ASTM A276-316 ASTM A276-420 ASTM A276-316
Clip 304S.S 316S.S 316S.S 316S.S
Key ASTM A182-F304 ASTM A182-F316 ASTM A182-F304 ASTM A182-F316
Spring INCONEL X-750 INCONEL X-750 INCONEL X-750 INCONEL X-750
Hook screw (5"& larger)”& larger) AISI 1025 AISI 1025 AISI 1025 304S.S
1
2
3
4
5
6
7
8
9
1
2
3
4
5
5
6
67
7
8
Dual Plate Check Valve
10 11
Wafer type
E
B
(Min
imu
m p
ipe
/In
side
Dia
me
ter)
E D
A
A-A
Flow Direction
51
60
74
97
122
146
194
243
289
318
381
429
478
575
616
743
889
1041
1194
1308
1422
2.01
2.34
2.91
3.83
4.87
5.77
7.63
9.56
11.38
12.50
15.00
16.88
18.81
22.63
24.25
29.25
35.00
41.00
47.00
51.50
56.00
NPS DN in mm in mm in mm in mm in mm in mm in mm Ibs kg
2" 50 4.09 104 2.38 60 2.36 60 4 0.63 16 5.75 146 RF — — 6 3
3" 80 5.35 136 2.88 73 2.87 73 4 0.63 16 6.75 171 RF — — 11 5
4" 100 6.85 174 2.88 73 4.49 114 8 0.63 16 6.75 171 RF — — 18 8
5" 125 7.72 196 3.38 86 5.56 141 8 0.75 19 7.50 191 RF — — 28 13
6" 150 8.70 221 3.88 98 6.61 168 8 0.75 19 8.00 203 RF 0.50 13 31 14
8" 200 10.94 278 5.00 127 8.62 219 8 0.75 19 9.50 241 RF 0.50 13 57 26
10" 250 13.35 339 5.75 146 10.75 273 12 0.88 22 10.50 267 RF 0.50 13 98 45
12" 300 16.06 408 7.13 181 12.76 324 12 0.88 22 12.25 311 RF 0.75 19 140 64
14" 350 17.68 449 7.25 184 14.02 356 12 1.00 25 12.75 324 RF 0.75 19 170 77
16" 400 20.12 511 7.50 191 15.98 406 16 1.13 29 13.25 337 RF 1.00 25 230 104
18" 450 21.63 549 8.00 203 18.00 457 16 1.13 29 14.25 362 RF 1.00 25 270 123
20" 500 23.88 606 8.63 219 20.00 508 20 1.25 32 15.25 387 RF 1.00 25 360 163
24" 600 28.25 718 8.75 222 24.00 610 20 1.25 32 16.00 406 RF 1.00 25 480 218
26" 650 30.50 775 14.00 356 26.00 660 24 1.25 32 23.25 591 RF 1.00 25 1000 454
28" 700 32.75 832 15.00 381 28.00 711 28 1.25 32 24.50 622 RF 1.00 25 1200 544
30" 750 34.75 883 12.00 305 30.00 762 28 1.25 32 21.75 552 RF 1.00 25 1000 454
32" 800 37.00 940 14.00 356 32.00 813 28 1.50 38 24.75 629 RF 1.00 25 1400 635
36" 900 41.25 1048 14.50 368 36.00 914 32 1.50 38 26.00 660 RF 1.00 25 1750 794
40" 1000 45.75 1162 17.00 432 40.00 1016 36 1.50 38 28.50 724 RF 1.50 38 2600 1179
42" 1050 48.00 1219 17.00 432 42.00 1067 36 1.50 38 29.00 737 RF 1.50 38 2850 1293
48" 1200 54.50 1384 20.63 524 48.00 1219 44 1.50 38 31.00 787 RF 1.50 38 4400 1996
54" 1350 61.00 1549 23.25 591 54.00 1372 44 1.75 44 35.75 908 RF 1.50 38 5500(2) 2495(2)
60" 1500 67.50 1715 26.00 660 60.00 1524 52 1.75 44 38.75 984 RF 1.50 38 7200(2) 3266(2)
Wafer Type - ASME Class 150
SizeDimensions
A B D EEnd
facing
Stud details
No.Diameter RF Stud
length
Weight
21/2" 65 4.84 123 2.63 67 2.88 73 4 0.63 16 6.25 159 RF — — 11 5
Hook screwhole size
- -
- -
- -
- -
-
-
-
-
-
-
-
-
Dual Plate Check ValveDimension & WeightDimension & WeightDual Plate Check Valve
Wafer Type - ASME Class 300
in mm
ENo.
NPS DN in mm in mm in mm in mm in mm in mm Ibs kg
2" 50 4.37 111 2.38 60 2.52 64 8 0.63 16 6.00 152 RF — — 6.5 3
21/2" 65 5.08 129 2.63 67 2.88 73 8 0.75 19 6.75 171 RF — — 13 6
3" 80 5.87 149 2.88 73 3.70 94 8 0.75 19 7.25 184 RF — — 13 6
4" 100 7.09 180 2.88 73 4.65 118 8 0.75 19 7.50 191 RF — — 18 8
5" 125 8.46 215 3.38 86 5.56 141 8 0.75 19 8.25 210 RF — — 28 13
6" 150 9.84 250 3.88 98 6.77 172 12 0.75 19 9.00 229 RF 0.50 13 40 18
8" 200 12.13 308 5.00 127 8.74 222 12 0.88 22 10.75 273 RF 0.50 13 68 31
10" 250 14.17 360 5.75 146 10.83 275 16 1.00 25 12.25 311 RF 0.50 13 110 50
12" 300 16.57 421 7.13 181 12.91 328 16 1.13 29 14.25 362 RF 0.75 19 170 77
14" 350 19.06 484 8.75 222 14.09 358 20 1.13 29 16.00 406 RF 0.75 19 290 132
16" 400 21.18 538 9.13 232 16.06 408 20 1.25 32 17.00 432 RF 1.00 25 400 181
18" 450 23.50 597 10.38 264 18.00 457 24 1.25 32 18.50 470 RF 1.00 25 520 236
20" 500 25.75 654 11.50 292 20.00 508 24 1.25 32 20.00 508 RF 1.00 25 700 318
24" 600 30.50 775 12.50 318 24.00 610 24 1.50 38 22.00 559 RF 1.00 25 1050 476
26" 650 32.88 835 14.00 356 26.00 660 28 1.63 41 25.00 635 RF 1.00 25 1250 567
28" 700 35.38 899 15.00 381 28.00 711 28 1.63 41 26.50 673 RF 1.00 25 1500 680
30" 750 37.50 953 14.50 368 30.00 762 28 1.75 44 26.75 679 RF 1.00 25 1650 748
32" 800 39.63 1006 16.00 406 32.00 813 28 1.88 48 29.00 737 RF 1.00 25 2000 907
36" 900 44.00 1118 19.00 483 36.00 914 32 2.00 51 32.75 832 RF 1.00 25 2700 1225
40" 1000 43.88 1114 21.50 546 36.00 914 32 1.63 41 35.25 895 RF 1.50 38 3400 1542
42" 1050 45.88 1165 22.38 568 40.00 1016 32 1.63 41 36.50 927 RF 1.50 38 4200 1905
48" 1200 52.13 1324 24.75 629 44.00 1118 32 1.88 48 40.50 1029 RF 1.50 38 7350 3334
SizeDimensions Stud details
Endfacing
Hook screw
hole size Weight
A B D Diameter RF Stud length
51
60
74
97
122
146
194
243
289
318
364
429
456
548
619
730
889
1041
1194
2.01
2.34
2.91
3.83
4.87
5.77
7.63
9.56
11.38
12.50
14.31
16.88
17.94
21.56
24.38
28.75
35.00
41.00
47.00
- -
- -
-
-
-
-
-
-
- -
- -
- -
Wafer type
E
B
(Min
imu
m p
ipe
/In
sid
e D
iam
ete
r)
E D
A
A-A
Flow Direction
12 13
1.69
2.63
3.44
5.19
6.81
8.50
10.13
11.50
12.81
14.44
17.94
21.50
43
67
87
132
173
216
257
292
325
367
456
546
Wafer Type - ASME Class 900
NPS DN in mm in mm in mm in mm in mm in mm in mm in mm Ibs kg
2" 50 5.63 143 2.75 70 2.38 60 8 0.88 22 8.50 216 8.75 222 RF/RTJ#24 — — 11.5 3
3" 80 6.63 168 3.25 83 2.91 74 8 0.88 22 8.50 216 9.00 229 RF/RTJ#31 — — 21 10
4" 100 8.13 206 4.00 102 4.50 114 8 1.13 29 10.25 260 10.75 273 RF/RTJ#37 0.38 10 43 20
6" 150 11.38 289 6.25 159 6.63 168 12 1.13 29 13.25 337 13.75 349 RF/RTJ#45 0.50 13 125 57
8" 200 14.13 359 8.13 206 8.63 219 12 1.38 35 16.25 413 16.75 425 RF/RTJ#49 0.50 13 275 125
10" 250 17.13 435 9.50 241 10.75 273 16 1.38 35 18.50 470 18.75 476 RF/RTJ#53 0.50 13 400 181
12" 300 19.63 498 11.50 292 12.75 324 20 1.38 35 20.75 527 21.25 540 RF/RTJ#57 0.75 19 450 204
14" 350 20.50 521 14.00 356 14.00 356 20 1.50 38 23.75 603 14.50 622 RF/RTJ#62 0.75 19 700 318
16" 400 22.63 575 15.13 384 16.00 406 20 1.63 41 25.50 648 26.25 667 RF/RTJ#66 1.00 25 950 431
18" 450 25.13 638 17.75 451 18.00 457 20 1.88 48 29.25 743 30.00 762 RF/RTJ#70 1.00 25 1400 635
20" 500 27.50 699 17.75 451 20.00 508 20 2.00 51 30.00 762 31.00 787 RF/RTJ#74 1.00 25 1650 748
24" 600 33.00 838 19.50 495 24.00 610 20 2.50 64 33.75 857 35.00 889 RF/RTJ#78 1.00 25 2325 1055
SizeDimensions Stud details
End
facing
WeightA B D E
No.Diameter RF Stud
lengthRFJ Studlength
Hook screw
hole size
- -
- -
Wafer Type - ASME Class 1500
NPS DN in mm in mm in mm in mm in mm in mm in mm in mm Ibs kg
2" 50 5.63 143 2.75 70 2.38 60 8 0.88 22 8.50 216 8.75 222 RF/RTJ#24 — — 11.5 5
3" 80 6.88 175 3.25 83 2.91 74 8 1.13 29 10.25 260 10.50 267 RF/RTJ#35 — — 23 10
4" 100 8.25 210 4.00 102 4.50 114 8 1.25 32 11.75 298 12.00 305 RF/RTJ#39 0.38 10 45 20
6" 150 11.13 283 6.25 159 6.63 168 12 1.38 35 16.50 419 17.00 432 RF/RTJ#46 0.50 13 125 57
8" 200 13.88 352 8.13 206 8.63 219 12 1.63 41 19.75 502 20.50 521 RF/RTJ#50 0.50 13 275 125
10" 250 17.13 435 9.75 248 10.75 273 12 1.88 48 23.25 591 23.75 603 RF/RTJ#54 0.50 13 430 195
12" 300 20.50 521 12.00 305 12.75 324 16 2.00 51 27.00 686 28.00 711 RF/RTJ#58 0.75 19 700 318
14" 350 22.75 578 14.00 356 14.00 356 16 2.25 57 30.25 768 31.50 800 RF/RTJ#63 0.75 19 925 420
16" 400 25.25 641 15.13 384 16.00 406 16 2.50 64 32.75 832 34.25 870 RF/RTJ#67 1.00 25 1300 590
18" 450 27.75 705 18.44 468 18.00 457 16 2.75 70 38.00 965 39.50 1003 RF/RTJ#71 1.00 25 1900 862
20" 500 29.75 756 21.00 533 20.00 508 16 3.00 76 42.25 1073 44.00 1118 RF/RTJ#75 1.00 25 2600 1179
24" 600 35.50 902 22.00 559 24.00 610 16 3.50 89 46.25 1175 48.50 1232 RF/RTJ#79 1.00 25 3725 1690
SizeDimensions Stud details
End
facing
Hook screwhole size
WeightA Diameter RF Stud
lengthRFJ StudlengthB D E
No.
1.69 43
2.63 67
3.44 87
5.19 132
6.81 173
8.50 216
10.13 257
11.50 292
12.81 325
13.75 349
14.75 375
15.13 384
- -
- -
5"
E
B
D
A
A-A
Flow Direction
Wafer type
(Min
imu
m p
ipe
/In
sid
e D
iam
ete
r)
E
Dual Plate Check ValveDimension & Weight
2.01 51
2.91 74
3.83 97
5.77 146
7.63 194
9.56 243
11.38 289
12.50 318
14.31 364
16.13 410
17.94 456
21.56 548
24.00 610
28.75 730
33.75 857
39.50 1003
NPS DN in mm in mm in mm in mm in mm in mm in mm in mm Ibs kg
2" 50 4.38 111 2.38 60 2.52 64 8 0.63 16 6.50 165 7.00 178 RF/RTJ#23 — — 6.5 3
3" 80 5.83 148 2.88 73 3.70 94 8 0.75 19 7.75 197 8.25 210 RF/RTJ#31— —
13 6
4" 100 7.63 194 3.13 79 4.65 118 8 0.88 22 8.75 222 9.25 235 RF/RTJ#37
— —
24 11
6" 150 10.50 267 5.38 137 6.63 168 12 1.00 25 12.00 305 12.75 324 RF/RTJ#45 0.50 13 69 31
8" 200 12.63 321 6.50 165 8.63 219 12 1.13 29 14.25 362 14.75 375 RF/RTJ#49 0.50 13 116 53
10" 250 15.75 400 8.38 213 10.75 273 16 1.25 32 17.00 432 17.50 445 RF/RTJ#53 0.50 13 210 95
12" 300 18.00 457 9.00 229 12.75 324 20 1.25 32 17.75 451 18.25 464 RF/RTJ#57 0.75 19 300 136
14" 350 19.38 492 10.75 273 14.00 356 20 1.38 35 20.25 514 20.75 527 RF/RTJ#61 0.75 19 430 195
16" 400 22.25 565 12.00 305 16.00 406 20 1.50 38 22.25 565 22.75 578 RF/RTJ#65 1.00 25 650 295
18" 450 24.13 613 14.25 362 18.00 457 20 1.63 41 25.25 641 25.75 654 RF/RTJ#69 1.00 25 850 386
20" 500 26.88 683 14.50 368 20.00 508 24 1.63 41 26.00 660 26.75 679 RF/RTJ#73 1.00 25 1125 510
24" 600 31.13 791 17.25 438 24.00 610 24 1.63 41 29.75 756 30.75 781 RF/RTJ#77 1.00 25 1750 794
26" 650 34.13 867 18.00 457 26.00 660 28 1.88 48 31.75 806 32.75 832 RF/RTJ#93 1.00 25 1950 885
28" 700 36.00 914 19.00 483 28.00 711 28 2.00 51 33.25 845 34.25 870 RF/RTJ#94 1.00 25 2300 1043
30" 750 38.25 972 19.88 505 30.00 762 28 2.00 51 34.25 870 35.25 895 RF/RTJ#95 1.00 25 2850 1293
32" 800 40.25 1022 21.00 533 32.00 813 28 2.25 57 36.25 921 37.25 946 RF/RTJ#96 1.00 25 3200 1452
36" 900 44.50 1130 25.00 635 36.00 914 28 2.50 64 41.25 1048 42.50 1080 RF/RTJ#98 1.00 25 4700 2132
40" 1000 45.50 1156 26.00 660 36.00 914 32 2.25 57 44.50 1130
— —
RF 1.50 a 5200 2359
42" 1050 48.00 1219 27.60 701 38.00 965 28 2.50 64 47.25 1200
— —
RF 1.50 38 6000 2722
Wafer Type - ASME Class 600
SizeDimensions Stud details
Endfacing
WeightA B D E
No.Diameter RF Stud
lengthRFJ Studlength
Hook screw
hole size
- -
- -
- -
- -
- -
- -
- -
- -
Dimension & WeightDual Plate Check Valve
Lug Type - ASME Class 150
in mm in mm
D ENo.
51
60
74
97
122
146
194
243
289
318
381
429
478
575
616
743
889
1041
1194
1308
1422
2.01
2.34
2.91
3.83
4.87
5.77
7.63
9.56
11.38
12.50
15.00
16.88
18.81
22.63
24.25
29.25
35.00
41.00
47.00
51.50
56.00
NPS DN in mm in mm in mm in mm in mm Ibs kg
2" 50 6.00 152 2.38 60 2.36 60 4 0.63 16 2.75 70 RF — — 9 4
21/2" 65 7.00 178 2.63 67 2.88 73 4 0.63 16 2.75 70 RF — — 24 11
3" 80 7.50 191 2.88 73 2.87 73 4 0.63 16 3.00 76 RF — — 18 8
4" 100 9.00 229 2.88 73 4.49 114 8 0.63 16 3.00 76 RF — — 33 15
5" 125 10.00 254 3.38 86 5.56 141 8 0.75 19 3.25 83 RF — — 53 24
6" 150 11.00 279 3.88 98 6.61 168 8 0.75 19 3.25 83 RF 0.50 13 53 24
8" 200 13.50 343 5.00 127 8.62 219 8 0.75 19 3.50 89 RF 0.50 13 130 59
10" 250 16.00 406 5.75 146 10.75 273 12 0.88 22 3.75 95 RF 0.50 13 216 98
12" 300 19.00 483 7.13 181 12.76 324 12 0.88 22 3.75 95 RF 0.75 19 270 123
14" 350 21.00 533 7.25 184 14.02 356 12 1.00 25 4.25 108 RF 0.75 19 330 150
16" 400 23.50 597 7.50 191 15.98 406 16 1.00 29 4.25 108 RF 1.00 25 420 191
18" 450 25.00 635 8.00 203 18.00 457 16 1.13 29 4.75 121 RF 1.00 25 500 227
20" 500 27.50 699 8.63 219 20.00 508 20 1.13 32 5.00 127 RF 1.00 25 650 295
24" 600 32.00 813 8.75 222 24.00 610 20 1.25 32 5.50 140 RF 1.00 25 850 386
26" 650 34.25 870 14.00 356 26.00 660 24 1.25 32 6.50 165 RF 1.00 25 1600 726
28" 700 36.50 927 15.00 381 28.00 711 28 1.25 32 6.50 165 RF 1.00 25 1900 862
30" 750 38.75 984 12.00 305 30.00 762 28 1.25 32 6.75 171 RF 1.00 25 1700 771
32" 800 41.75 1060 14.00 356 32.00 813 28 1.50 38 7.50 191 RF 1.00 25 2400 1089
36" 900 46.00 3368 14.50 368 36.00 914 32 1.50 38 8.00 203 RF 1.00 25 2800 1270
40" 1000 50.75 1289 17.00 432 40.00 1016 36 1.50 38 8.00 203 RF 1.50 38 4100 1860
42" 1050 53.00 1346 17.00 432 42.00 1067 36 1.50 38 8.25 210 RF 1.50 38 4400 1996
48" 1200 59.50 1511 20.63 524 48.00 1219 44 1.50 38 8.75 222 RF 1.50 38 6600 2994
54" 1350 66.25 1683 23.25 591 54.00 1372 44 1.75 44 9.75 248 RF 1.50 38 8300(2)
3765(2)
60" 1500 73.00 1854 26.00 660 60.00 1524 52 1.75 44 10.25 260 RF 2.00 51 10700(2)
4853(2)
SizeDimensions Stud details
End
facing
WeightA B Diameter RF Stud
length
Hook screwhole size
- -
- -
- -
- -
-
-
-
-
-
-
-
-
14 15
Dimension & Weight
Lug type
BA
A-A
5"
D
E
Flow Direction
Lug Type - ASME Class 300
2.01 51
2.34 60
2.91 74
3.83 97
4.87 122
5.77 146
7.63 194
9.56 243
11.38 289
12.50 318
14.31 364
16.88 429
17.94 456
21.56 548
24.38 619
28.75 730
35.00 889
41.00 1041
47.00 1194
NPS DN in mm in mm in mm in mm in mm in mm in mm Ibs kg
2" 50 6.50 165 2.38 60 2.52 64 8 0.63 16 2.75 70 RF — — 18 8
21/2" 65 7.50 191 2.63 67 2.88 73 8 0.75 19 3.25 83 RF — — 26 12
3" 80 8.25 210 2.88 73 3.70 94 8 0.75 19 3.50 89 RF — — 33 15
4" 100 10.00 254 2.88 73 4.65 118 8 0.75 19 3.50 89 RF — — 55 25
5" 125 11.00 279 3.38 86 5.56 141 8 0.75 19 3.75 95 RF — — 70 32
6" 150 12.50 318 3.88 98 6.77 172 12 0.75 19 3.75 95 RF 0.50 13 99 45
8" 200 15.00 381 5.00 127 8.74 222 12 0.88 22 4.25 108 RF 0.50 13 143 65
10" 250 17.50 445 5.75 146 10.83 275 16 1.00 25 4.75 121 RF 0.50 13 233 106
12" 300 20.50 521 7.13 181 12.91 328 16 1.13 29 5.25 133 RF 0.75 19 350 159
14" 350 23.00 584 8.75 222 14.09 358 20 1.13 29 5.25 133 RF 0.75 19 550 250
16" 400 25.50 648 9.13 232 16.06 408 20 1.25 32 5.75 146 RF 1.00 25 750 340
18" 450 28.00 711 10.38 264 18.00 457 24 1.25 32 6.00 152 RF 1.00 25 950 431
20" 500 30.50 775 11.50 292 20.00 508 24 1.25 32 6.00 152 RF 1.00 25 1250 567
24" 600 36.00 914 12.50 318 24.00 610 24 1.50 38 7.00 178 RF 1.00 25 1850 839
26" 650 38.25 972 14.00 356 26.00 660 28 1.63 41 7.75 197 RF 1.00 25 2200 998
28" 700 40.75 1035 15.00 381 28.00 711 28 1.63 41 8.25 210 RF 1.00 25 2700 1225
30" 750 43.00 1092 14.50 368 30.00 762 28 1.75 44 8.75 222 RF 1.00 25 2800 1270
32" 800 45.25 1149 16.00 406 32.00 813 28 1.88 48 9.25 235 RF 1.00 25 3400 1542
36" 900 50.00 1270 19.00 483 36.00 914 32 2.00 51 9.75 248 RF 1.00 25 4600 2087
40" 1000 58.75 1238 21.50 546 36.00 914 32 1.63 41 9.25 235 RF 1.50 38 5100 2313
42" 1050 50.75 1289 22.38 568 40.00 1016 32 1.63 41 9.50 241 RF 1.50 38 6100 2767
48" 1200 57.75 1467 24.75 629 44.00 1118 32 1.88 48 10.50 267 RF 1.50 38 10000 4536
WeightA B D E
No.Diameter RF Stud
length
SizeDimensions Stud details
End
facinghole size
Hook screw
- -
- -
- -
- -
- -
- -
- -
- -
Dual Plate Check Valve Dual Plate Check ValveDimension & Weight
(Min
imu
m p
ipe
/In
sid
e D
iam
ete
r)
E
Lug type
BA
A-A
5"
D
E
Flow Direction
(Min
imu
m p
ipe
/In
sid
e D
iam
ete
r)
E
5"
Lug Type - ASME Class 600
NPS DN in mm in mm in mm in mm in mm in mm in mm in mm Ibs kg
2" 50 6.50 165 2.38 60 2.52 64 8 0.63 16 3.25 83 3.75 95 RF/RTJ#23 — — 18 8
3" 80 8.25 210 2.88 73 3.70 94 8 0.75 19 3.75 95 4.25 108 RF/RTJ#31 — — 33 15
4" 100 10.75 273 3.13 79 4.65 118 8 0.88 22 4.25 108 4.75 121 RF/RTJ#37 — — 86 39
6" 150 14.00 356 5.38 137 6.63 168 12 1.00 25 5.00 127 5.50 140 RF/RTJ#45 0.50 13 172 78
8" 200 16.50 419 6.50 165 8.63 219 12 1.13 29 5.75 146 6.00 152 RF/RTJ#49 0.50 13 312 142
10" 250 20.00 508 8.38 213 10.75 273 16 1.25 32 6.25 159 6.75 171 RF/RTJ#53 0.50 13 515 234
12" 300 22.00 559 9.00 229 12.75 324 20 1.25 32 6.50 165 6.75 171 RF/RTJ#57 0.75 19 550 250
14" 350 23.75 603 10.75 273 14.00 356 20 1.38 35 6.75 171 7.25 184 RF/RTJ#61 0.75 19 800 363
16" 400 27.00 686 12.00 305 16.00 406 20 1.50 38 7.50 191 7.75 197 RF/RTJ#65 1.00 25 1150 522
18" 450 29.25 743 14.25 362 18.00 457 20 1.63 41 8.00 203 8.50 216 RF/RTJ#69 1.00 25 1550 703
20" 500 32.00 813 14.50 368 20.00 508 24 1.63 41 8.25 210 9.00 229 RF/RTJ#73 1.00 25 1900 862
24" 600 37.00 940 17.25 438 24.00 610 24 1.63 41 8.75 222 9.50 241 RF/RTJ#77 1.00 25 3000 1361
26" 650 40.00 1016 18.00 457 26.00 660 28 1.88 48 9.50 241 10.50 267 RF/RTJ#93 1.00 25 3400 1542
28" 700 42.25 1073 19.00 483 28.00 711 28 2.00 51 10.00 254 11.00 179 RF/RTJ#94 1.00 25 4000 1814
30" 750 44.50 1130 19.88 505 30.00 762 28 2.00 51 10.25 260 11.25 286 RF/RTJ#95 1.00 25 4700 2132
32" 800 47.00 1194 21.00 533 32.00 813 28 2.25 57 11.00 279 12.00 305 RF/RTJ#96 1.00 25 5400 2449
36" 900 51.75 1314 25.00 635 36.00 914 28 2.50 64 11.75 298 13.00 330 RF/RTJ#98 1.00 25 7800 3538
40" 1000 52.00 1321 26.00 660 36.00 914 32 2.25 57 12.50 318 — — RF 1.50 38 8100 3674
42" 1050 55.25 1403 27.60 701 38.00 965 28 2.50 64 13.50 343 — — RF 1.50 38 9600 4355
hole sizeWeight
A B D ENo.
Diameter RF Studlength
RFJ Studlength
SizeDimensions Stud details
End
facing
2.01
2.91
3.83
5.77
7.63
9.56
11.38
12.50
14.31
16.13
17.94
21.56
24.00
28.75
33.75
39.50
51
74
97
146
194
243
289
318
364
410
456
548
610
730
857
1003
Hook screw
- -
- -
- - - -
- -
- -
-
-
-
-
Lug Type - ASME Class 900
1.69 43
2.63 67
3.44 87
5.19 132
6.81 173
8.50 216
10.13 257
11.50 292
12.81 325
14.44 367
17.94 456
21.50 546
NPS DN in mm in mm in mm in mm in mm in mm in mm
2" 50 8.50 216 2.75 70 2.38 60 8 0.88 22 4.25 108 4.75 121 RF/RTJ#24
3" 80 9.50 241 3.25 83 2.91 74 8 0.88 22 4.00 102 4.50 114 RF/RTJ#31
4" 100 11.50 292 4.00 102 4.50 114 8 1.13 29 5.00 127 5.50 140 RF/RTJ#37
6" 150 15.00 381 6.25 159 6.63 168 12 1.13 29 5.25 133 5.75 146 RF/RTJ#45
8" 200 18.50 470 8.13 207 8.63 219 12 1.38 35 6.25 159 6.75 171 RF/RTJ#49
10" 250 21.50 546 9.50 241 10.75 273 16 1.38 35 6.50 165 7.00 178 RF/RTJ#53
12" 300 24.00 610 11.50 292 12.75 324 20 1.38 35 6.75 171 7.25 184 RF/RTJ#57
14" 350 25.25 641 14.00 356 14.00 356 20 1.50 38 7.25 184 7.75 197 RF/RTJ#62
16" 400 27.75 705 15.13 384 16.00 406 20 1.63 41 7.75 197 8.50 216 RF/RTJ#66
18" 450 31.00 787 17.75 451 18.00 457 20 1.88 48 8.50 216 9.50 241 RF/RTJ#70
20" 500 33.75 857 17.75 451 20.00 508 20 2.00 51 9.25 235 10.00 254 RF/RTJ#74
24" 600 41.00 1041 19.50 495 24.00 610 20 2.50 64 11.00 279 12.00 305 RF/RTJ#78
in mm
— —
— —
— —
0.50 13
0.50 13
0.50 13
0.75 19
0.75 19
1.00 25
1.00 25
1.00 25
1.00 25
Ibs kg
37 17
60 27
95 43
255 116
480 218
730 331
850 386
1250 567
1650 748
2500 1134
2900 1315
4400 1996
RFJ StudlengthNo.
B DA E Diameter RF Studlength
SizeDimensions Stud details
End
facing hole size
WeightHook screw
- -
-
-
-
-
16 17
Dimension & Weight
Lug type
BA
A-A
ED
E
Flow Direction
Minimum pipe /Inside
Diameter
Lug Type - ASME Class 1500
NPS DN in mm in mm in mm in mm in mm in mm in mm
2" 50 8.50 216 2.75 70 2.38 60 8 0.88 22 4.25 108 4.75 121 RF/RTJ#24
3" 80 10.50 267 3.25 83 2.91 74 8 1.13 29 5.25 133 5.75 146 RF/RTJ#35
4" 100 12.25 311 4.00 102 4.50 114 8 1.25 32 6.00 152 6.25 159 RF/RTJ#39
6" 150 15.50 394 6.25 159 6.63 168 12 1.38 35 7.25 184 7.75 197 RF/RTJ#46
8" 200 19.00 483 8.13 207 8.63 219 12 1.63 41 8.25 210 9.00 229 RF/RTJ#50
10" 250 23.00 584 9.75 248 10.75 273 12 1.88 48 9.50 241 10.25 260 RF/RTJ#54
12" 300 26.50 673 12.00 305 12.75 324 16 2.00 51 10.50 267 11.50 292 RF/RTJ#58
14" 350 29.50 749 14.00 356 14.00 356 16 2.25 57 11.50 292 12.75 324 RF/RTJ#63
16" 400 32.50 826 15.13 384 16.00 406 16 2.50 64 12.75 324 14.00 356 RF/RTJ#67
18" 450 36.00 914 18.44 468 18.00 457 16 2.75 70 14.00 356 15.25 387 RF/RTJ#71
20" 500 38.75 984 21.00 533 20.00 508 16 3.00 76 15.25 387 16.75 425 RF/RTJ#75
24" 600 46.00 1168 22.00 559 24.00 610 16 3.50 89 17.50 445 19.25 489 RF/RTJ#79
in mm
— —
0.38 10
0.50 13
0.50 13
0.75 19
0.75 19
0.75 19
1.00 25
1.00 25
1.50 38
1.50 38
1.50 38
Ibs kg
35 16
71 32
150 68
265 120
625 284
798 362
1400 635
2400 1089
2500 1134
3900 1769
5800 2631
7200 3266
A BNo.
DiameterSize
Dimensions Stud details
End
facinghole size
weightRF Studlength
RFJ StudlengthD E
1.69 43
2.63 67
3.44 87
5.19 132
6.81 173
8.50 216
10.13 257
11.50 292
12.81 325
13.75 349
14.75 375
15.13 384
Hook screw
- -
Dual Plate Check Valve Dual Plate Check ValveDimension & Weight
Dual Plate Check ValveDimension & Weight
18 19
Double Flanged Type - ASME Class 600
11.38
12.50
14.31
16.13
17.94
21.56
24.00
28.75
33.75
39.50
289
318
364
410
456
548
610
730
857
1003
NPS DN in mm in mm in mm in mm in mm in mm in mm Ibs kg
12" 300 22.00 559 9.00 229 12.75 324 20 1.25 32 8.50 216 9.00 229 RF/RTJ#57 550 249
14" 350 23.75 603 10.75 273 14.00 356 20 1.38 35 9.00 229 9.50 241 RF/RTJ#61 846 384
16" 400 27.00 686 12.00 305 16.00 406 20 1.50 38 9.75 248 10.25 260 RF/RTJ#65 1010 458
18" 450 29.25 743 14.25 362 18.00 457 20 1.63 41 10.50 267 11.00 279 RF/RTJ#69 1320 599
20" 500 32.00 813 14.50 368 20.00 508 24 1.63 41 11.25 286 11.75 298 RF/RTJ#73 1700 771
24" 600 37.00 940 17.25 438 24.00 610 24 1.63 41 12.25 311 13.00 330 RF/RTJ#77 2580 1170
26" 650 40.00 1016 18.00 457 26.00 660 28 1.88 48 13.25 337 14.25 362 RF/RTJ#93 3100 1406
28" 700 42.25 1073 19.00 483 28.00 711 28 2.00 51 14.00 356 15.00 381 RF/RTJ#94 3800 1724
30" 750 44.50 1130 19.88 505 30.00 762 28 2.00 51 14.00 356 15.00 381 RF/RTJ#95 5390 2445
32" 800 47.00 1194 21.00 533 32.00 813 28 2.25 57 14.75 375 16.00 406 RF/RTJ#96 6000 2722
36" 900 51.75 1314 25.00 635 36.00 914 28 2.50 64 16.00 406 17.00 432 RF/RTJ#98 6700 3039
42" 1050 55.25 1403 27.60 701 38.00 965 28 2.50 64 19.50 495 — — RF 9400 4264
End facingA ENo.
Diameter RF Studlength
SizeDimensions
B D
Stud details Weight
RFJ Studlength
- -
- -
- -
Note:
1. A = OD 2. B = F to F 3. D = ID 4. E = Minimum ID 5. Yellow part is amened by technical Dept. 6. Above data are origined from Velan cataloge VEL-PQCV-2006
Double Flanged Type - ASME Class 900
10.13
11.50
12.81
14.44
17.94
21.50
257
292
325
367
456
546
NPS DN in mm in mm in mm in mm in mm in mm in mm Ibs kg
12" 300 24.00 610 11.50 292 12.75 324 20 1.38 35 8.75 222 9.25 235 RF/RTJ#57 770 349
14" 350 25.25 641 14.00 356 14.00 356 20 1.50 38 9.25 235 10.00 254 RF/RTJ#62 1240 562
16" 400 27.75 705 15.13 384 16.00 406 20 1.63 41 10.00 254 10.75 273 RF/RTJ#66 1210 549
18" 450 31.00 787 17.75 451 18.00 457 20 1.88 48 11.00 279 11.75 298 RF/RTJ#70 1845 837
20" 500 33.75 857 17.75 451 20.00 508 20 2.00 51 12.00 305 12.75 324 RF/RTJ#74 3940 1787
24" 600 41.00 1041 19.50 495 24.00 610 20 2.50 64 14.00 356 15.00 381 RF/RTJ#78 4175 1894
SizeDimensions Stud details
D ENo.
DiameterA B RF Studlength
RFJ Studlength
WeightEnd facing
E
5"
Double flanged type
ED
Flow Direction
BA
A-A
Minimum pipe /Inside
Diameter
NPS DN in mm in mm in mm in mm in mm Ibs kg
Double Flanged Type - ASME Class 150
B D ENo.
End
facing
WeightA Diameter RF Stud length
SizeDimensions Stud details
11.38 289
12.50 318
15.00 381
16.88 429
18.81 478
22.63 575
24.25 616
29.25 743
35.00 889
41.00 1041
47.00 1194
51.50 1308
56.00 1422
- -
-
-
-
-
12" 300 19.00 483 7.13 181 12.76 324 12 0.88 22 4.75 121 RF 279 127
14" 350 21.00 533 7.25 184 14.02 356 12 1.00 25 5.25 133 RF 319 145
16" 400 23.50 597 7.50 191 15.98 406 16 1.00 29 5.50 140 RF 387 176
18" 450 25.00 635 8.00 203 18.00 457 16 1.13 29 6.00 152 RF 460 209
20" 500 27.50 699 8.63 219 20.00 508 20 1.13 32 6.25 159 RF 600 272
24" 600 32.00 813 8.75 222 24.00 610 20 1.25 32 7.00 178 RF 862 391
26" 650 34.25 870 14.00 356 26.00 660 24 1.25 32 8.75 222 RF 1500 680
28" 700 36.50 927 15.00 381 28.00 711 28 1.25 32 9.00 229 RF 1700 771
30" 750 38.75 984 12.00 305 30.00 762 28 1.25 32 9.25 235 RF 1750 794
32" 800 41.75 1060 14.00 356 32.00 813 28 1.50 38 10.50 267 RF 2300 1043
36" 900 46.00 3368 14.50 368 36.00 914 32 1.50 38 11.25 286 RF 2525 1145
40" 1000 50.75 1289 17.00 432 40.00 1016 36 1.50 38 11.25 286 RF 3900 1769
42" 1050 53.00 1346 17.00 432 42.00 1067 36 1.50 38 11.75 298 RF 4220 1914
48" 1200 59.50 1511 20.63 524 48.00 1219 44 1.50 38 12.50 318 RF 5900 2676
54" 1350 66.25 1683 23.25 591 54.00 1372 44 1.75 44 14.00 356 RF 7700 3493
60" 1500 73.00 1854 26.00 660 60.00 1524 52 1.75 44 15.00 381 RF 10000 4536
mm in
12" 300 20.50 521 7.13 181 12.91 328 16 1.13 29 6.75 171 RF 336 152
14" 350 23.00 584 8.75 222 14.09 358 20 1.13 29 7.00 178 RF 431 196
16" 400 25.50 648 9.13 232 16.06 408 20 1.25 32 7.50 191 RF 675 306
18" 450 28.00 711 10.38 264 18.00 457 24 1.25 32 7.75 197 RF 850 386
20" 500 30.50 775 11.50 292 20.00 508 24 1.25 32 8.25 210 RF 1078 489
24" 600 36.00 914 12.50 318 24.00 610 24 1.50 38 9.25 235 RF 1965 891
26" 650 38.25 972 14.00 356 26.00 660 28 1.63 41 10.50 267 RF 2200 998
28" 700 40.75 1035 15.00 381 28.00 711 28 1.63 41 11.00 279 RF 2600 1179
30" 750 43.00 1092 14.50 368 30.00 762 28 1.75 44 11.75 298 RF 3525 1599
32" 800 45.25 1149 16.00 406 32.00 813 28 1.88 48 12.75 324 RF 3300 1497
36" 900 50.00 1270 19.00 483 36.00 914 32 2.00 51 13.25 337 RF 4700 2132
40" 1000 58.75 1238 21.50 546 36.00 914 32 1.63 41 13.25 337 RF 4900 2223
42" 1050 50.75 1289 22.38 568 40.00 1016 32 1.63 41 13.75 349 RF 5000 2268
48" 1200 57.75 1467 24.75 629 44.00 1118 32 1.88 48 15.25 387 RF 7400 3357
11.38
12.50
14.31
16.88
17.94
21.56
24.38
28.75
35.00
41.00
47.00
289
318
364
429
456
548
619
730
889
1041
1194
NPS DN in mm in mm in mm in mm in mm in mm Ibs kg
End
facingRF Stud lengthWeight
A B D ENo.
Diameter
DimensionsSize
Stud details
Double Flanged Type - ASME Class 300
- -
- -
- -
Dimension & WeightDual Plate Check Valve
Axial Flow Check Valve
as flow slows down and provides quick reaction on flow
velocity change.
These unique design features ensure Neway series SA valves
can deliver an effective dynamic reaction under various flow
deceleration conditions, this design valve can be used in a
wide range of critical and demanding service applications,
such as fast-reversing reciprocating compressor system or in
installations where the check valve must be placed in close
proximity to the pump inlet or outlet.
Treamlined Venturi Shape Design to ensure flow
efficiency and minimize pressure loss.Flow Outlet Side Designed to ensure
pressure recovery and minimize fluid
turbulence.
Seat & Flow Inlet Side designed for maximizing flow
impact on disc and providing streamlined flow to
minimize pressure loss.
Spring subassembly as the most core components to
ensure the effective reaction and adjustment for the change
of the flow velocity.
Neway series SA axial flow check valve is a streamlined venturi
port design and available in size from 2 to 48 and in pressure
rating from ASME class 150 through 2500 and a wide range of
body and trim materials for special application requirement.
In Neway axial flow check valve, the disc is the only moving
part to minimize internal wear, and the configuration of disc,
seating and body provides streamlined flow path with a
venture effect so as to reduce pressure loss as small as
possible. The compressed disc spring initiates valve closure
" "
Disc with metal seal surface to effectively
prevent scratching from the lumps in flow.
Integrated rigid casting of valve
outer body and inner housing to
ensure fire safe and no leakage
toward outside.
20 21
Design Feature
Axial Flow Check Valve Design Feature
1 The whole valve port geometry is a streamlined venturi shape
design: both the body and seat design are suitable for medium
flowing while the complete surface of disc is round, and the support
frame at valve outlet is designed into taper structure. The design
features ensure flow efficiency of the service medium and minimize
pressure loss.
2 As the inlet flow reduces, the disc reacts immediately so as to
limit medium backflow and valve slamming. Because of the features
of the spring load, low mass disc and shorter travel, the disc can be
closed as quickly as possible. At the moment of zero flow the disc is
fully closed.
1 1
2 2
Figure 1: Flow trace and velocity distribution at cutting plane Figure 2: Internal Component's Pressur Distribution shown by virtue of Model "Exploding Picture"
Figure 3: Pressure Curve Between Inlet Section Centre and Outlet Section Centre
Axial Flow Check Valve
Below is some figures from CF desing software's analysis on
axial flow check valve:
3
4
5
6
7
8
9
10
Under low pressure conditions, the internal spring preload
on the disc drives disc tightly against seat to seal. Axial flow
check valves can overcome the generic problem that the
conventional swing check valve has with bad sealing
performance under the low pressure condition.
Water Hammer Free Water hammer problems are
eliminated with this design because of the spring loaded disc,
properly sized for your specific application, low mass and short
closure stroke. The spring initiates disc closure of the disc
before water hammer effects can occur.
The axial flow check valves are available in both long
pattern and short pattern.
In axial flow check valve, the disc is the only moving part,
offering high operating reliability.
Comparing with two piece body design, the one piece body
structure has advantages on fire safe when fire happens,
because there is no leakage toward outside.
As the sealing surface is a metal material, comparing with
soft seal materials, it is more effective to prevent scratching the
seal surface from particles in flow media.
Valve internal port geometry is a streamlined venture
shape design, to ensure minimal pressure loss. This energy
saving feature typically experiences less than half of the
pressure drop found in swing check designs.
The axial flow Check can be installed at any position.
Comparing to conventional swing check valve, customer can
make more much choices.
22 23
Design Feature
Axial Flow Check Valve
Part Material
BODY ASTM A216-WCB ASTM A352-LCC ASTM A217-WC6 ASTM A351 CF8M
DISC
ASTM A351 CF8MASTM A216-WCB/ER410
ASTM A217-CA15(below)4 ” and
ASTM
A352-LCC/316.OVERLAY
ASTM
A217-WC6/STL.OVERLAY
SEAT ASTM
A105/STL.OVERLAY
ASTM
A182-F316/STL.OVERLAY
ASTMA182-F11/STL.OVE
RLAY
ASTM-A182-F316/STL.OVERLAY
LEADING POLE 304S.S 316S.S 304S.S
GUIDEDING SLEEVE 304S.S 316S.S 304S.S
SUPPORTING PLATE ASTM A105 316S.S 304S.S
BLOCKING PLATE ASTM A105 316S.S 304S.S
SPRING INCONEL X-750 INCONEL X-750 INCONEL X-750
RETAINING TAB AISI 1025 AISI 1025 AISI 1025
STUD B8 B8 B8
316S.S
316S.S
316S.S
316S.S
INCONEL X-750
AISI 1025
B8
Materials
Parts & Materials Axial Flow Check ValveDimension & Weight
24 25
1
2
3
4
5
6
7
8
9
10
1
2
34
6
10
7
8
9
Long pattern Short pattern
D
L
D
L
5
Flange End - ASME Class 150
in mm in mm in mm Ibs kg Ibs kg
2 50 2.01 51 7.99 203 31 14
3 80 2.99 76 9.49 241 53 24
4 100 4.02 102 11.5 292 86 39
6 150 5.98 152 14.02 356 9.96 253 148 67 134 61
8 200 7.99 203 19.49 495 11.61 295 260 118 216 98
10 250 10 254 24.49 622 14.37 365 406 184 333 151
12 300 12.01 305 27.52 699 17.13 435 584 265 474 215
14 350 13.27 337 30.98 787 18.7 475 787 357 631 286
16 400 15.24 387 34.02 864 21.46 545 1091 495 877 398
18 450 17.24 438 38.5 978 24.02 610 1157 525 959 435
20 500 19.25 489 38.5 978 26.57 675 1770 803 1504 682
22 550 21.26 540 42.01 1067 - - 1892 858 1590 721
24 600 23.27 591 50.98 1295 31.89 810 2610 1184 2167 983
28 700 27.01 686 57.01 1448 37.2 945 3316 1504
30 750 29.02 737 60 1524 39.76 1010 4125 1871
34 850 32.76 832 - - - - 5761 2613
36 900 34.49 876 77.01 1956 47.83 1215 6486 2942
40 1000 38.5 978 85 2159 53.15 1350 8765 3976
42 1050 40.24 1022 89.02 2261 55.71 1415 10423 4728
48 1200 45.98 1168 101.02 2566 63.58 1615 13843 6279
Note: Long pattern is a Neway standard dimension
SizeDimensions
D L
NPS DNLong pattern
Weight
Short patternLong pattern(RF/BW) Short pattern(RF/BW)
— —- -
-
-
-
-
- -
-
-
-
-
- -
-
-
-
-
-
-
-
-
-
-
-
-
Flange End - ASME Class 300
in mm in mm in mm Ibs kg Ibs kg
2 50 2.01 51 10.51 267 40 18
3 80 2.99 76 12.52 318 75 34
4 100 4.02 102 14.02 356 121 55
6 150 5.98 152 17.52 445 9.96 253 220 100 192 87
8 200 7.99 203 20.98 533 11.61 295 370 168 317 144
10 250 10 254 24.49 622 14.37 365 606 275 507 230
12 300 12.01 305 27.99 711 17.13 435 802 364 675 306
14 350 13.27 337 32.99 838 18.7 475 1098 498 915 415
16 400 15.24 387 34.02 864 21.46 545 1440 653 1197 543
18 450 17.24 438 38.5 978 24.02 610 1967 892 1609 730
20 500 19.25 489 40 1016 26.57 675 2533 1149 2202 999
22 550 21.26 540 44.02 1118 - - 3038 1378 2612 1185
24 600 23.27 591 52.99 1346 31.89 810 3699 1678 3144 1426
28 700 27.01 686 59.02 1499 37.2 945 5101 2314 4361 1978
30 750 29.02 737 62.76 1594 39.76 1010 6195 2810 5265 2388
34 850 32.76 832 - - - - 8545 3876
36 900 34.49 876 82.01 2083 47.83 1215 9647 4376
40 1000 38.5 978 95.98 2438 53.15 1350 12064 5472
42 1050 40.24 1022 103.03 2617 55.71 1415 13521 6133
48 1200 45.98 1168 124.06 3151 63.58 1615 17855 8099
SizeDimensions
D LWeight
NPS DNLong pattern(RF/BW) Short pattern(RF/BW) Short patternLong pattern
Note: Long pattern is a Neway standard dimension
- -
-
-
-
-
-
-
-
-
-
-
-
-
-
-
D
D
L L
Axial Flow Check Valve Axial Flow Check Valve
26 27
Dimension & Weight Dimension & Weight
Note: Long pattern is a Neway standard dimension
Flange End - ASME Class 600
in mm
in mm in mm in mm in mm Ibs kg Ibs kg
2 50 2.01 51 11.5 292 11.61 295 53 24
3 80 2.99 76 14.02 356 14.13 359 97 44
4 100 4.02 102 17.01 432 17.13 435 168 76
6 150 5.98 152 22.01 559 22.13 562 9.96 253 10.08 256 368 167 309 140
8 200 7.99 203 25.98 660 26.1 663 11.61 295 11.73 298 615 279 514 233
10 250 10 254 30.98 787 31.1 790 14.37 365 14.49 368 966 438 785 356
12 300 12.01 305 32.99 838 33.11 841 17.13 435 17.24 438 1261 572 966 438
14 350 13.27 337 35 889 35.12 892 18.7 475 18.82 478 1563 709 1219 553
16 400 15.24 387 39.02 991 39.13 994 21.46 545 21.57 548 2310 1048 1854 841
18 450 17.24 438 42.99 1092 43.11 1095 24.02 610 24.13 613 2857 1296 2231 1012
20 500 19.25 489 47.01 1194 47.24 1200 26.57 675 26.81 681 3739 1696 2890 1311
22 550 21.26 540 50.98 1295 51.38 1305 - - 0 4603 2088 3589 1628
24 600 23.27 591 55 1397 55.39 1407 31.89 810 32.24 819 5172 2346 4081 1851
28 700 27.01 686 62.99 1600 63.5 1613 37.2 945 37.72 958 8113 3680 6570 2980
30 750 29.02 737 65 1651 65.51 1664 39.76 1010 40.28 1023 9700 4400 8031 3643
34 850 32.76 832 - - - - - - 0 13139 5960 10512 4768
36 900 34.49 876 82.01 2083 82.64 2099 47.83 1215 48.46 1231 14286 6480 11343 5145
40 1000 38.5 978 90 2286 - - 53.15 1350 15697 7120
42 1050 40.24 1022 95.98 2438 - - 55.71 1415 17284 7840
48 1200 45.98 1168 100 2540 - - 63.58 1615 19577 8880
L
Dimensions
Short patternShort pattern(RTJ)NPS DN
Long pattern(RF/BW) Short pattern(RF/BW)Long pattern(RTJ) Long pattern
Size WeightD
Flange End - ASME Class 900
Note: Long pattern is a Neway standard dimension
in mm
in mm in mm in mm in mm Ibs kg Ibs kg
2 50 2.01 51 14.49 368 14.61 371 128 58
3 80 2.99 76 15 381 15.12 384 196 89
4 100 4.02 102 17.99 457 18.11 460 9.25 235 9.37 238 251 114 203 92
6 150 5.98 152 24.02 610 24.13 613 11.81 300 12.05 306 485 220 390 177
8 200 7.99 203 29.02 737 29.13 740 13.19 335 13.54 344 924 419 710 322
10 250 10 254 32.99 838 33.11 841 15.16 385 15.51 394 1429 648 1056 479
12 300 12.01 305 37.99 965 38.11 968 17.13 435 17.76 451 1865 846 1351 613
14 350 12.76 324 40.51 1029 40.87 1038 18.7 475 19.45 494 2434 1104 1907 865
16 400 14.76 375 44.49 1130 44.88 1140 21.46 545 24.02 610 3351 1520 2778 1260
18 450 16.73 425 47.99 1219 48.5 1232 24.02 610 24.88 632 5291 2400
20 500 18.62 473 52.01 1321 52.48 1333 26.57 675 27.44 697 7055 3200
24 600 22.52 572 60.98 1549 61.73 1568 31.89 810 32.99 838 9171 4160
30 750 28.11 714 72.99 1854 73.86 1876 - - 15609 7080
36 900 33.74 857 84.88 2156 - - - - 22487 10200
Short pattern(RF/BW)Long pattern(RTJ) Long pattern Short patternShort pattern(RTJ)NPS DN
Long pattern(RF/BW)
Size WeightD
Dimensions
L
- -
- -
- -
-
-
-
-
-
-
-
-
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
-
-
Note: Long pattern is a Neway standard dimension
Flange End - ASME Class 400
in mm
in mm in mm in mm in mm
2 50 2.01 51 11.5 292 11.61 295
3 80 2.99 76 14.02 356 14.13 359
4 100 4.02 102 17.01 432 17.13 435
6 150 5.98 152 22.01 559 22.13 562 9.96 253 10.08 256
8 200 7.99 203 25.98 660 26.1 663 11.61 295 11.73 298
10 250 10 254 30.98 787 31.1 790 14.37 365 14.49 368
12 300 12.01 305 32.99 838 33.11 841 17.13 435 17.24 438
14 350 13.27 337 35 889 35.12 892 18.7 475 18.82 478
Ibs kg
51 23
97 44
154 70
295 134
492 223
743 337
957 434
1268 575
Ibs kg
247 112
410 186
604 274
736 334
988 448
16 400 15.24 387 39.02 991 39.13 994 21.46 545 21.57 548
18 450 17.24 438 42.99 1092 43.11 1095 24.02 610 24.13 613
20 500 19.25 489 47.01 1194 47.24 1200 26.57 675 26.81 681
22 550 21.26 540 50.98 1295 51.38 1305 - - 0
24 600 23.27 591 55 1397 55.39 1407 31.89 810 32.24 819
28 700 27.01 686 62.99 1600 63.5 1613 37.2 945 37.72 958
30 750 29.02 737 65 1651 65.51 1664 39.76 1010 40.28 1023
34 850 32.76 832 - - - - - - 0
36 900 34.49 876 82.01 2083 82.64 2099 47.83 1215 48.46 1231
40 1000 38.5 978 90 2286 - - 53.15 1350
42 1050 40.24 1022 95.98 2438 - - 55.71 1415
48 1200 45.98 1168 100 2540 - - 63.58 1615
DN
Shortpattern(RF/BW)
Short pattern(RTJ)
D
Long
pattern(RF/BW)Long pattern(RTJ) Long pattern Short pattern
Size WeightDimensions
L
NPS
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
-
-
- -
- -
- -
- -
- -
- -
Long pattern Short pattern
28
Axial Flow Check Valve Dimension & Weight
Flange End - ASME Class 2500
Note: Long pattern is a Neway standard dimension
Flange End - ASME Class 1500
Note: Long pattern is a Neway standard dimension
in mm
in mm in mm in mm in mm Ibs kg Ibs kg
2 50 2.01 51 14.49 368 14.61 371 126 57
3 80 2.99 76 18.5 470 18.62 473 240 109
4 100 4.02 102 21.5 546 21.61 549 9.25 235 9.37 238 386 175
6 150 5.75 146 27.76 705 27.99 711 11.81 300 12.05 306 970 440 772 350
8 200 7.64 194 32.76 832 33.15 842 13.19 335 13.54 344 1459 662 1166 529
10 250 9.49 241 39.02 991 39.37 1000 15.16 385 15.51 394 2604 1181 2132 967
12 300 11.38 289 44.49 1130 45.12 1146 17.13 435 17.76 451 3534 1603 2553 1158
14 350 12.52 318 49.49 1257 50.24 1276 18.7 475 19.45 494 5397 2448 3940 1787
16 400 14.25 362 54.49 1384 55.39 1407 21.46 545 22.32 567 7937 3600 5944 2696
18 450 - - 60.51 1537 61.38 1559 24.02 610 24.88 632 10758 4880 8069 3660
20 500 - - 65.51 1664 66.38 1686 26.57 675 27.44 697 14109 6400 10679 4844
24 600 - - 76.5 1943 77.64 1972 31.89 810 32.99 838 17284 7840
L
Long pattern(RTJ)Short
pattern(RF/BW)Long pattern Short patternShort pattern(RTJ)
NPS DNLong pattern(RF/BW)
Size weightD
Dimensions
in mm
in mm in mm in mm in mm Ibs kg Ibs kg
2 50 1.73 44 17.76 451 17.87 454 256 116
3 80 2.52 64 22.76 578 22.99 584 582 264
4 100 3.5 89 26.5 673 26.89 683 11.61 295 11.97 304 1146 520 939 426
6 150 5.24 133 35.98 914 36.5 927 15.35 390 15.87 403 2469 1120 1975 896
8 200 7.13 181 40.24 1022 40.87 1038 16.93 430 17.56 446 4268 1936 3329 1510
10 250 8.86 225 50 1270 50.87 1292 21.26 540 22.13 562 6614 3000
12 300 10.51 267 55.98 1422 56.89 1445 23.43 595 24.29 617 9700 4400
Short pattern(RTJ)Short
pattern(RF/BW)Long pattern Short pattern
NPS DNLong pattern(RF/BW) Long pattern(RTJ)
Size WeightLD
Dimensions
D
D
L L
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
Long pattern Short pattern